Draft-gear.



J. R. GARDWELL.,

DRAFT GBARn- APPLICATION IILBD 00T'. 25, 1911.

Patented Aug. 19, 1913.

2 SHEETS-SHEET l.

J. R. GARDWBLL,

DRAFT GEAR. AP'PLIGATION FILED 00T. 25, 1.911.

Patented Aug. 19, 1913.

Prg5/.9

Infe ja-mes S'EIES G QRDXVELL, 0F CHCAGO, ILLINOIS, ASSIGNGE T UNION DRAFT GEAR DRAFT-GEM@ flexitmatcn of application Serial Ho.

; o all esem, mm' camera Ee it inown that l, JAMns'fR. CARDWELL, a, tee United States, enel resident of Chiesge, County of Coeli, and State of llli- 's here isvented certain new and useful ents in. Draft-Gear, et which the speeieetion, en which are drawings,

"ie invention are te secure eiliciency, and particularly L initial spring resistance which set 1n edv'euce of the rctional resistance,

:leteil f erf draftgeer, drawn upon a ,1. Y, L, c lg. 3 is a detail section-on @ne n 2; Fig. 4 is e perspective of ev used 1n the gear; Figs, 5

et' s, railway cer are slrewn ene ef 'the end sills et l". The ordine. y eenstructiem end usuel teil strap or loop ue ollcwers l5, 1,u'hieh stop lugs 17,18,secureclto draft sills in the usuel ed bete/een the planes et lfl, .are e series nl Wedge t :incl toggle links, l el) which the ere .Y the moving te the stationenc thence to the stop lzes.

'ral wedge member 19 is e S eeicaten of Letters letent.

519,743, led September 27, 13613. This application filed October Serial No. Sl.

length then the normal distance between the followers, and its ends are tapered te form Wetlging faces 20, 2l, 22 and The outer Wedge members, tw@ in number, shown at 9A, 25, hawetlieir inner feces beveled to- Werd their ends tc form the .weolgng surfaces 26, 2'?, 28 and the members 2l, 25 being 01' substitntlelly the seme length es the central member l). lnterpcsed between the contiguous u'edgng feces el? the member 19, end the members 2l, 25 ere e series of triangular Wedging; blocks 30, 3l, 32 and 33, the third fac i each et these blecks beering upon the inner face of e. follower.

A bei' 3% extends transversely through the draft sills l0, il, and the Wedging members 19, 24 and 25, and carries adjacent its ends annular abutments 35, 36 lielcl in place by nuts 37, 38, threaded upon the ber. A pair of-'sleeves 39, 4:0, are mounted upon the ber 3i, their inner ends beer-ing respectively against the Wegng members 24, .25, and their outer ends Carrying annuler butments 41, 2. @oiled expens'on springs 43,

encircle the ber 3; anfl react respectively between the ebutnients 35, 4l, and 3, 42. The members Ell, 2:3, are free to slcle upon the bei' 34 enel the latter .may have a loose t in the member 19. as 45, in the draft sills, Within which the bei' 34C is locetetl, are el sulicient size to ne commodete the sleeves 39, @'50, and are elongated to permit these elements te mOi/e longitudinally of the sills. 16, have instencnng flanges 46, 47, preferably continuous, which s housing for` the Wedgng elements, '1L-lie depth of 'these flanges being such es te permit the desire-il reletive movement o'f'tne feu-@Were Tegglelinlis 'lle ferm shown 4,

l gle members, enel Weclge links 19, 30, 3l, 32 and 33 ere recessed te Vpermit the mere-v znent el these several members Witheet in- Tne apertures,

action, oi.' all or the togg'lolinlrs i'orce these' oiiter wed-ge nfiexnhers spart, compressing' theI springs ed, llie wcdging blocks 30 andll nieve inwardly with the icollomer 'i5' but without material or any friction upon' either the inenilier u the earlier part oit' the nioveinen't, for the i'eoson that' the spreading' setion of the tog ggleoneohanisin daring this part o'tA the travel is sollicitent to carry the Aouter wedge nicmliers away from their faces. The initial resistance is, tliereforeofl`ered hy the springs. .l'l'ie hliicks 33 are spread during the early port ol'ftlie inm'enient by the advance oi? the centi-el' wedge niemher lkwliicli is carried haelt 'ardljg' hy the har 3l. is the toggle liidlis opprooeh the positions es illnstreted in l? 5 and G, their spreading' a'ctionffdecreases and consequently the lirictional en gil-gement oil the triangular blocks' with the wedge i'iienilieiis 19, wlw, is gradually augniented'.A Under the influence of polling stress the 'follower l@ nieves 'torwa-i'dly, otherwise the action is the same as that already,r desorilied.

.l claim as my,invention l. ln o droit gear in coi'nbinotion, stop logs', aJ pair oi followers cooperating therewith, s, t ansverse bar having almtinents ad jacent its ends, aliiitinents sleeved upon the har, spriii i'e`-:ioting between each set of alnitnients, and linlis pivoted to each 'folu lower ond 'transmitting pressure to the'two sleeved ahntnients.

2. ln a, draft gear in combination, stop logs, o noir of followers copereting;- there with, transverse har having' oliiitinents sdjacent its ends,V abiitinenls sleevet'i upon the liar, one thereof facing' each of the end ahntni'ents, springs reoctinghetween each set o'lt alnitineiit rigid links interposoi'l between each J'ollo1 -and lootli oi" the sleeved abutw ments, and friction devicesA interposed hetween the followers arranged to coins into as follows pitir of aloutinents fsprings reacting between each of the sleeved 'sentiments :ind the adjacent. end abutment, :i

the lin'lts aitl .Y sleeved? 19 or the nieinbers 2l, 25 duringv .itrictionsl action citer initial notion of 'the logs, a pair of followers cooperating theref with, otransverse bar between the followers and having abutnients adjacent its ends, o

sleeved upon the bor,

pani' oit' plates hearing outwardly upon the slintnients, each plate having its inner foce beveled toward its ends, s cent 'al wedging inenihln,x wedging blocks interposed between tlie'lirst-nsnied platesand the central nieniher and bearing against the 'ollow e Il; :ind rigid links interposed between the y followers and the first-mentioned plates.

ln o draft gear, in combination, stop ugs, a pair of followers cooperating therewith, a transverse bar having abutments ad* jacent its ends, coiled springs sleeved upon the hor and ben-ring against the ahlitnien'ts, and .links interposed between the followers sind the inner ends of the springs.

51 'ln' a draft gear, in combination, stop lli-gs, followers, traveling abutineiits, springs seated on the obutnients, links interposed be-y tween the followers and the springs and constituting' toggle mechanism with-the lfollowers, and o series of wedges interposed between the 'followers and arranged to hek brought into action by the advance thereof oi'ter the initial compression of the springs by the toggle action. i,

6. ln a` draft gear, in conibinetion, stop lugs, followers, traveling abntments ar ranged transverse to the line of draft, ahntinents opposed to the tirst named abutinents and` having their rearward faces beveled, springs interposed, between the opposed alintincnts, links interposed between the followers and the second nained zibiitnients and acting with increasing' power as the follow- :ipproach each other, and lwedges interposed between the follower and the inclined feces of' the second named ahutments. i

l'. In a draft gear, in combination, stop ugs, e pair of followers cooperating there with, av transverse har l'iaving alontnients adjacent its ends, coiled springs the bar and hearing against the alontnients, and toggleflinlts interposed between the lollowers and the inner ends of the springs,

y JAMES R. CARDWELL. lili Mossos:

Louis l. GILLsoN, E. lll. lnirroiinn.

sleeved upon' 

